# Tire PSI vs Thread Calculators

The clearest difference is review sentiment: Thread Calculators at 100% against Tire PSI's 33%. Thread Calculators also leads on rating (5.0 vs 2.7) and ads (none vs shown). Tire PSI's advantage is price (Free vs $1.99) and ratings volume (3 vs 1). On in-app purchases and device support there is nothing between them.

Tire PSI is free to download; Thread Calculators costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Thread Calculators holds the better App Store score, 5.0 against 2.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews point the same way: 33% of Tire PSI's written reviews are positive against 100% of Thread Calculators's.

Tire PSI ships an update every 67 months, Thread Calculators every 10 months. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Tire PSI | Thread Calculators |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [2.7 (3 ratings)](https://appshunter.io/ios/app/tire-psi/id1031074212/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/thread-calculators/id1670586227/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 67 months | **Every 10 months** |
| Monetization | **Free** | Paid |
| Size | 62 MB | 51 MB |
| Requires iOS | 16.4 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [asaf bendor](https://appshunter.io/developer/546495912) | [Kantaben Gorasiya](https://appshunter.io/developer/1640260396) |

## What reviewers say

### Tire PSI

[App page](https://appshunter.io/ios/app/tire-psi/id1031074212)

Find the ideal tire pressure for your car with this easy-to-use utility. Simply select your car's manufacturer, model, and tire size to get recommended front and rear tire pressures. Save your car's details for future reference.

**Highlights:** Find ideal tire pressure, Select car manufacturer, Select car model, Select tire size, Save car details, User-friendly interface

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Thread Calculators

[App page](https://appshunter.io/ios/app/thread-calculators/id1670586227)

This app provides precise thread-cutting data for various international standards. It assists machinists, engineers, and CNC professionals in quickly finding essential measurements and detailed tables for thread dimensions and cutting values.

**Highlights:** Supports international thread standards (M, UNC, NPT, etc.), Tap Hole Size Calculator, Bolt Diameter Guide, Tap Hole Forming Data, Tap Hole Repair Values, Detailed thread dimension tables

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Tire PSI free?

Tire PSI is free to download, with no in-app purchases.

### Is Thread Calculators free?

Thread Calculators costs $1.99, with no in-app purchases.

### Which has better reviews, Tire PSI or Thread Calculators?

Thread Calculators is rated higher. Tire PSI averages 2.7 out of 5 from 3 ratings, while Thread Calculators averages 5.0 from 1 ratings.

### Do Tire PSI or Thread Calculators have ads?

Tire PSI shows ads; Thread Calculators does not.

### Which is updated more often, Tire PSI or Thread Calculators?

Tire PSI ships an update every 67 months, and Thread Calculators every 10 months. Most recently, Tire PSI was updated on November 1, 2026 and Thread Calculators on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*